Veronica Rossi

It's been months since Perry was named Blood Lord of the Tides, and Aria was charged with an impossible mission; now they are about to be reunited. But their reunion is far from perfect. The Tides don't take kindly to Aria, a former Dweller. And with the worsening Aether storms threatening the tribe's precarious existence, Aria begins to fear that leaving Perry behind might be the only way to save them both.

"In their effort to reach the fabled Still Blue, Aria and Perry will have to rescue Cinder, defeat Sable and Hess, and unite the Dwellers and the Outsiders once and for all"--

Before Perry and Aria, there was Roar and Liv.

After a childhood spent wandering the borderlands, Roar finally feels like he has a home with the Tides. His best friend Perry is like a brother to him, and Perry's sister, Liv, is the love of his life. But Perry and Liv's unpredictable older brother, Vale, is the Blood Lord of the Tides, and he has never looked kindly on Roar and Liv's union. Normally, Roar couldn't care less about Vale's opinion.

...

In 1776, fifteen-year-old Francisca escapes a dangerous life in the Bahamas by posing as a wealthy shipwreck victim, and soon finds herself a spy for George Washington in New York. 1776. A shipwreck off her home in Grand Bahama Island presents an unthinkable opportunity for Frannie Tasker to escape her brutal stepfather. Assuming the identity of drowned Emmeline Coates, Frannie is rescued by a British merchant ship and sails with the crew to New...